“Everybody still needs to take precautions,” said Jennifer Dacey, superintendent of the Bristol County Mosquito Control Project.

Last week, the state health department announced that an East Bridgewater man between 71-80 years old, contracted West Nile Virus in early October. The man was the eighth in the state and second in Plymouth County to contract the mosquito-borne virus.

“The good news,” said Texeira, of Plymouth County, “is the mosquitoes are not only regulated by (weather), they’re regulated by the day too.”

With fewer hours of daylight, mosquitoes are flying less, he added.

“Although some risk for human disease persists until a hard frost occurs, mosquitoes are extremely unlikely to be active when temperatures fall below 50 degrees in the evening,” added Anne Roach, spokesperson for the state DPH, in an email Monday.

The state, which traps and tests mosquitoes throughout the season, ended its 2013 Arbovirus Surveillance program last week, on Oct. 16.

Right now, Texeira said, mosquitoes are not as concerned about “looking for blood” as they are looking for a place to survive the winter.

But while there are fewer mosquitoes flying, the virus is likely amplified, said Dacey. And as birds begin to migrate, there is less food source, which could lead to a higher infection rate, she added.

Dacey said the Bristol County Mosquito Control Project has also stopped trapping and testing for the season, and has shifted its focus to water management, and treating water basins and culverts for next season.